Weak exciton scattering in molecular nanotubes revealed by double-quantum two-dimensional electronic spectroscopy.
نویسندگان
چکیده
The two-exciton manifold of a double-wall cylindrical molecular aggregate is studied using a coherent third order optical technique. Experiments reveal the anharmonic character of the exciton bands. Atomistic simulations of the exciton-exciton scattering show that the excitons can be treated as weakly coupled hard-core bosons. The weak coupling stems from the extended exciton delocalization made possible by the nanotube geometry.
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ورودعنوان ژورنال:
- Physical review letters
دوره 108 6 شماره
صفحات -
تاریخ انتشار 2012